Snubber.



w. N. BARRETT.

SNUBBER.

APPLICAHON mso MAY1.|s|e.

Patented .rune 1917.

Fig. 2.

UNITED STATES P ATENT OFFICE.

WILLIAM N'. BARRETT, 0F MEADVILLE, PENNSYLVANIA.

SNUBBEB.

To all 'whom it may concern:

Be it known that I, WILLIAM N oLil: BAR- iia'rr, a citizen of. the United States, residi'n at Meadville in the county of Crawfori and 'State of new and useful Improvements in Snubbers, o f which the following 'is a specification This invention relates. to snubbersI and consists in certain improvements-in the construction thereof as will be hereinafter fully described and pointed out iiithe claims.

The object of the invention is to prevent a tooirapid4 rebound from the Spring coinpression in automobiles and the general purpose of the invention is well understood.

`The invention is illustrated in the accompanying dra-wings as follows Figure 1 is a section on-the line 1-1 in Fig. 2 is a section on the line 2-2 in Fig. l.'

Fig. 3 is a side elevation of one member of the snubber.

Fig. 4 is a view of the buffer spring and immediately actuating parts.

l marks a rail of an automobile and 2 the axle. The operative member of the snubber has the frame 3 from which extends a clamp bracket 4. One jaw of the chimp bracket is adapted to engage a portion of the antoniobile rail and it is clamped thereon by .means vof a set screw 5.

A plate G'extends outwardly from 'the frame 3 and a Bange 7 extends outwardly from the plate 6, the flange being approximately 4circular in shape and having an inwardly extending portion along the outer edge, thus forming a housing for the snubvber strap hereinafter described.

A `pin 8 extends through the frame A spring wheel 9 is journaled on the in 8. A spring 10 is mounted on an extension 11 extending-from the frame 3, the extension having a slot 11 by means of which the' spring is anchored. The outer end of the spring has a Ahooked end which extends into 'iiothes 9* in the interior surface of the Wheel 9. There are preferably several of Pennsylvania, have invented ,Specification of Letters Patent. l Patuted June 5 191.7,

Application mamy 1s, 191s. semi No. 95,282.

these lnotches so that dileieiit adjustments of the spring may be made.

A strap 12 exlends'ovei the friction sui'- face 13 and its'free end is secured to a bolt 14= carried by the clamping bolt 16. The clamping u bolt 16 extends through the clamping member 17 bj.' means of which the free 'end of the strap is secured tothe axle 2 of the ear.

The friction' surface 13 is ca'rried by a i l-Vhen` however, the parts tend to separate the strap is drawn over the friction surface 13 and inasmuch as the slack on the strap is taken up by the spring wheel this friction resists the separation of the parts and thus gives the snubbing :ic-tion as desired.

Dileient weights of cars and different springs require different resistance and to make the device adjustable for this purpose, I have arranged to make the late 18 which carries the flange 13 adjustab e. Notches 19 are iii-ranged in the flange 7. A pawl 20 is placed between the shoulders 21' on the face of the )late 18. The pawl is secured in positon y the -nut'22 on the end of the pin 8. The end of vthe'pawl extends intothe notches 19. By rotating 'the plate and bringing the pawl 20 into different notches the length of the friction surface 13 which is engaged by the strap 12 may be varied.-

When the members have separated to such an extent that the springing of the car has returnedto its neutral position* it is plished in the present invention. as follows:

A lever 23 is pivoted on the extension 11. A projection 24 is arranged on the inner edge of the Wheel 9 and is adapted to enage the lever 23 when the wheel 9 has been rotated by the outwardly movinstrap to a position where the axle and snub ing device are separated to the normal extent. The point at which the projection 24 picks up the lever may be varied by varying the length-of the strap l2 and the clamp 25 is provided so that `this adjustment may be made.

The end of the lever 23 engages a spring 26, the spring being arranged in the pocket 27 exten ing from the 'frame 3.

When the parts have separated to the normal extent the projection 24 will engage the lever 23 and force the lever 23 to rock or turn with the spring Wheel 9 thus compressing the spring `26. Not only the sprin action will be added to the resistance o ered by the friction device but inasmuch as the spring it wil draw the strap linto closer engagement. with the friction surface 13 so as to increase the frictional resistance. In this way the over-running of the device or springs of the vehicle are very largely prevented.

I have shown a braided strap. Any form of strap of leather or other materia-l may be used.

What I claim as new is 1. In a snubber, the combination of the members forming a means of attachment to an axle and a car body; a curved friction surface carried by one of the members a friction strap operating over said surface and having one end secured to the opposite member; and a rotatively mounted spring dev-ice arranged within the curve of the friction surface operating upon the opposite end of th strap, and increasin the braking action of the strap as the mem rs separat/e.

2. In a snubber,l the combination ofthe members forming a means of attachment to an axle and a. car body;l a` curved friction surface carried by one of the members; a friction strap operating over said surface and havingone end secured to the opposite member; a wheel rotatively mounted within the' curve of thefriction surface to which thc opposite end of the strap is secured; and a sprin resisting the movement of the wheel. 3. n a snubber, the combination of the members forming a means of attachment to n axle and a car body; a. cover plate rotav tivel'y mounted; a curved friction surface carried by. the cover plate; a friction strap operatingc'ver the surface and having one end secured to the opposite member; a spring operating on the opposite end of the 26 resists the turning of the wheel 94 strap; and means for rotatively adjusting the cover plate to vary the length of friction surface engaged.

4. In a snubber, the combination of tbc members forming a means of attachment to an axle and a car body; n friction surface carried by one of the members; a friction .ment between the strap and friction surface at a point in the movement of the strap.

5. In a snubber, the -combination of the members forming a means of attachment to an axle and a car body; a friction surface carried by one of the members; a friction 'strap operating over said surface and haying one end secured to the opposite member; a spring operating on the opposite end of the strap; a buffer spring; and means for locking the strap with the buffer spring at a point 1n the movement of the strap.

6. In a snubber, the combinationof the members forming aVv means of attachment to an axle and a car body'; a friction surface carried by one of the members; a friction strap operating over said surface and having one end'secured to the opposite member; a 'rotatively mounted spring device.

operating on the op osite end of the strap; a buffer sprin ;an means for locking t e strap with the ufer spring at a point in the movement of the strap.

7. In a snubber, the combination of the members forming a means of attachment to an axle and a car body; a friction surface carried by one of the members; a friction strap operating over said surface and having one end secured to the opposite member; a rotatively mounted spring device operating on the opposite end of t e strap; a lever actuated by said device after a redeterL mined movement of said device; an a buffer spring actuated by the lever.

8. In a snubber, the combination of thei membersfo'rming a means of attachment to an axle and a car body; a friction surface carried by one of the members; a friction strap operating-over said surface and having one end secured to the opposite member; a rotatively mounted sprin device operating on the opposite end of t e strap; a lever actuated by said device after a predetermined movement of said device; a buffer sprin actuated by the lever; and means for a justing the length of the strap.

9. In a snubber, the combination of the members forming a means of attachment to an axle and a car body, one of the members in ead member; n w eel rotatvely mounted www i :Wmpreng a frame with le eentrelly Iocatea dup mouted on the wheel end ex- 10 exten-mien; en ouutwardly egteqding plate tending over'the frieeion surface; e buffer ywith an overhangxvn ange; e pm arranged by the frame; n leve; nl oun-4 Y V `on and extensin and engegmgmd ma the pin; a cover plete havl, nl frlctlon' spring; and means on the spring Wheel for eurfnce'extending therefrom; a. vetexxt lockl e l the lever. f `1i, ing device between the mer-hangingA dan n" any whereof I Vhave hereunto eet ge und the cover plate; s, spring wh vlmounted myhand, f n the pin; a spring etuetmg the wheel: e WILLIAM 4N. BARRETT. 

